
public class Calculator {
	public static int jia(int a , int b){
		return a + b;
	}
		public static int jian(int a , int b){
			return a - b;
		}
		public static int cheng(int a , int b){
			return a * b;
		}
		public static int chu(int a , int b){
			return a / b;
		}
		
		public static void main(String[] args) {
			System.out.println(Calculator.jia(5, 9));
			System.out.println(Calculator.jian(5, 9));
			System.out.println(Calculator.cheng(5, 9));
			System.out.println(Calculator.chu(5, 9));
			
		}


	

}
